Strainer or filter.



W. S. ELLIOTT.

STRAINER 0R FILTER.

. APPLICATION FILED JAN. 8, I915.

1,172,689. Patented Feb. 22,1916.

4 SHEETSSHEET WITNESSES INVENTOR THE COLUMBIA PLANOGRAPH CCL, WASHINGTON, DV (2 w s. ELLIOTT;

STRAINER 0R FILTER.

APPLICATION FILED JAN. 8. 1915.

Patented Feb. 22,1916.

4 SHEETSSHEET 2.

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THE COLUMBIA PLAPjOGRAPH 00-, WASHINQTON. D. c.

lllll l /J"J7//////I//////7// WITNESSES \M I I W. S. ELLIOTT.

STRAINER 0R FILTER.

APPLICATION FILED JAN. s, 1915.

Patented Feb. 22,1916.

4 SHEETS SHEET 3- INVENTOR O 0 O 000 000000000000000OOOOOOOOOOOOOOOOOOOOO O 0 0 00000 0000 0 0 000 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00000 00 O 0 0O 0 O 00000000000OOOOOOOOOOOOOOOOO0000000000000OOOO 0 O 0 0 O0 00 O WITNESSES THE COLUMBIA PLANOGRAPH co., WASHINGTON. D C.

1 WI L AM 5-, m re 1 m;m masiwwemm To all whom z't'ma'y concern;

, Be itknown'thatLiWxnmnm S. ELLIO T, acitizen ofathe United States, residing at Pittsburgh, in the countyof Allegheny and State of Pennsylvania,- have invented anew and useful Improvement in Strainers or Filters, .of WhIlCh thB following is a full, clear,;and exact description, reference belng had tofthe accompanying drawings, forming part; of thisispecificationla I My invention has relation to strainers or filters, and is designed tolprovide a simple and eflicient construction and arrangement ofthe parts, whereby whenever itis necessary to renewwor clean the filter or. strainer elements, the; normal flow through. theapparatus may be shut off and the ,liquidbypassed therethrough from the. inlet to vthe outlet. iMy invention also provides an apparatus in which the parts are; readily accessible for cleaning or for renewals or repairs 1 In the drawings: Figure'lis a transverse section of a strainer or filter embodying my invention; Figs. 2 and 3 are vertical sections taken, respectively, on theline II- -II'and III-III of Fig-1, butwith some of the parts'in different positions; and Fig. 4: is a View similar to Fig. 3, but showing a modification.

'Referring first to that form of my invention shown in Figs. 1- to 3, inclusive,- the numeral '2 designates the outer shell of the apparatus,this shell in the specific construction-shownbeing'in the form of a vertical cylinder having at the bottom atone side an inlet connection 3 and at the opposite side an outlet connection 4. At the inlet side the 'outershell has a vertical inlet {passage or chamber 5, which communicates at its lower end with-the inlet passage 8, and atits upper end with'the interior of theshell through 'in'the manner hereinafter described. "The inner shell 9 carries a plurality of strainer I Speciflcationof mantras.

srnarnnnon IL ER} i p p liaten-ted e 22; 1916. 1 Application filed January 8;1315. -:Seria1No. 1,1341 I I I or: filter elements, :In the present instance;v

these are shown as consisting ofvertically arranged cylindrical tubes 13 of perforated n1etal, grouped within the chamber of the :inner' shell around the center thereofiand spaced .from each other; Where the'appa ratus-is designedtolbe used asa filter, each element may be wrapped with a covering 14 ,ofisuitable i-filter fabric.- Where the device is to-befkused asaa' strainer, this wrapping maybe omittedgl as; shown in Figg'. The I strainer elements are seatedat their. lower ends in thebottom. plate 9 of 'the inner shell *throughwhichplate they open into thebottom chamber; 15, which communicates with the outlet. 4:.1 In thisqbottom'chamberis a valve platej16, which .is secured to -a nut 16?, .Whichisengagedby the threaded-end portion ofa vertical valve rod 17, which eX-' tends'upwardly' through the central portion i .of-the chamber of the inner. shell and isengaged-at its upper end bythesocket portion 17% of an actuating shaft lfi, which may be provided-with aflhand wheel 19,-01 with} and thus closethe lower open ends of the 4 strainer elements. Inorder toprevent lea-k-' aagezg-upwardly around 'the valve rod, the

valve plate, is provided with; an upwardly extending. sleeve 2l, carrying the "stufing box .22. Thejvalve is guided .by means. of, the

guide bolts 23, whichare arranged to move freely, through apertures 'in the bottom por- :tiony9? ofthe innershell, with retaining nuts Qi atxtheir. upper ends. The upper end. of each strainer element is shown as being closed by means of aca-p 25. The inner shell 9? is held properly centered within the outer shell',-and is guided in its vertical movements by means of the lugs 26.

The normal operation is asfollowsz The" par'tsbeing. inthe position shown. in Fig. 3, the water or other liquid enters the. outer shell at 3 and passes upwardly through the admission chamber .-5, and into the interior chamber ofsthe shell'throughthe' ports 6." I

. It then: fills'the chamber 'of the inner shell around thefilter elements and enters the same through the wrapping (if this-be used) and through the perforations, and isthence discharged into the. bottom chamber 15 and out through theoutlet connection 4:. If it is desired to shut ofl -thenormal flow-through ing or renewing the filter elements, the hand off. the lower ends of the filter elements. Further actuation-of the rod 17 acts through V the valve plate 16 to raise the entire-inner shell with the filter elements until the flange 10 comes into seating engagement with the loweredge of the-seating ring 12, as shown in Fig. 2. -This prevents further flow of liquid into the inner shell, and the liquid entering at the port 6 Wlll pass below the flange 10 and into the space betweenthe inner and outer shells and directlyto the outlet connection l. If necessary or desired, the entire inner shell with the filter elements canbe removed from the outer shell. 27, 27 designate apipe extending to a point near the bottom of the inner shell, and by means'ot' which the contents of said shell may be siphoned or pumped out, or it may be used as a blow-off connection for removing the dirt accumulated in the chamber.

In the modification shown in Fig. l, the construction is substantially the same as that before described, except that the strainer elements 14? are supported at their lower ends in a separate plate-28, which restsupon the interior ledge or flange 29 of the inner shell, there being a chamber 30 below this bottom plate and into which the strainer elements discharge. The bottom wall 31 of this chamber 30 has a centraldischarge.

opening 32, whichis arranged to be closed by a vertically movable valve plate 33, which is generally similar to the valve plate16, but is of small diameter. This valve plate is guided by the bolts 34:. The operation of.

this form is substantially the same, as in the form first described. It permits the :use of a smaller valve plate 33, and by reason of the separate supporting means 28, provides means whereby the strainer elements may be readily lifted out of the apparatus, without removing the inner shell.

The advantages of my inventionwill be readily apparent, since it provides an extremely simple and effective strainer or filter in which ready access may be had to all the parts and in which the necessary cleaning, renewals or repairs may be effected without the necessity of entirely shuttingofi the flow of water through the apparatus.

I do not desire to limit myself to thei'particular forms of my invention'which I have herein shown and described as it is obvious that various changes can be made in the form and arrangement of the parts,'without departingfrom the spirit and scope of my invention as defined in the appended claims.

I claim: 7 I l 1. A strainer or filter, comprising an outer shell having inlet. and outlet connections, an

inner shell movably supported within the outer shell, a series of filter or strainer elements within the chamber of theinner shell, and means whereby the inner shell can be' ?'70 moved bodily withrespect to the outer shell to act as a valve to close off the filteror strainer chamber of the inner shell, substantially as described. I

2. Apparatus of the character described, comprising an outer shell. having an inlet and an outlet connection, an inner shell mov ably supported within the outer shell andi having a plurality of filter or strainer ele. ments open at oneend, a valve memberfor. 2'

closing the-open end of said elementsfand means whereby the inner shell may also be. actuated to forma valve to close oif theiadmission of liquidfrom'the outer shell to the filter elements, substantiallyv as 1 described? 3; Apparatus ofthe, characterdescribed, comprising an outer shell having aninlet and anoutlet connection, an inner shell movably supported within :the outer shell and having aflplu'rality of filter or strainer. elements open at one end, a valve member for.

closing the open end of said: elements; and

means whereby the inner shellmay also be actuated to form a valve to close. off the admission of liquid from the outer shell to, the filter elements, and said: outer shell having a bypass passage around the inner shell, substantially as described.

daApparatus of-the character described, comprising an outer shell having inlet/and outlet connections, an-inner shell .movably supported within the outer shell, there being: 7

an inlet port or passage to-the inner shell, means-for actuating the inner shell tov close said port or passage, a plurality of ifilteli or' strainer elements carried by the inner shell, and a valve member for closingthe discharge'ends or said elements, substantially as described. g

5; Apparatus of the character described,

comprising an outer shell having inlet and outlet connections, an: innerishelljmovably supported within the outerwshell; there being an inlet port or passage=to the inner; shell, means for actuating the inner shell to close said port I or passage, pluralitywof filter or strainer elements carried by-the in ner shell,:and a valve member for closing the discharge ends of said elements, said valve member having an initialindependent move ment and being then arranged to engage; the inner shell "and effect a movement thereof through the upperportion'thereof, an inner shell loosely supported within the outer shell below said inlet passage, a plurality of. filter elements within the inner shell and carried thereby, said velements being open at their lower ends, a vertically movable valve plate for closing the lower ends of said elements,"

an actuating shaft for said valve plate, said ranged to form a valve to close off the inlet fromthe outer shell to the interior of the inner shell, aplurality of filter or strainer elementscarried by the inner shell and open at their lower ends, a valve member for closing said open lower ends, a centrally ar ranged actuating rod for the valve member,-

and a stuifmg box for said rod carried by the valve member, substantially'as described.

8. A strainer or filter, comprising an outer shell having inlet and outlet connections, an inner shell supported within the outer shell and containing a filter or strainer element open at one end, a valve member for closing the open end of said element, anactuating shaft attached to the valve and extending therethroughand withinthe inner shell, a .tube or sleeve also attachedto the valve and surrounding a portion of the stem within the inner shell, and a stuifing box cooperating with said sleeve or tube to prevent leakage through the connection between the valve" and its stein, substantially as de scribed; v

19. A strainer or filter comprising an outer shell, having inlet and outlet connections,

an inner shell movably supported within the outer shell .andcontaining a filter or strainer element open at its lower end, a valve member arranged to close the open lower end of said element, a stem passing through the valve for the purpose of operating the same, a tube or sleeve attached to the valve surrounding the stem within the inner shell,

.and astufiin'g box which engages the stem for the. purpose ofpreventing any leakage -fiowvp'a-st-the connection between the valve audits-stem, substantiallyas described.

In testimony whereof, have hereunto set my hand.

WILLIAM [si ELLIOTT.

Witnesses:

W. C. LYON, H. M. CoRwIN.

Copies of this patent may be obtained for five cents each,by addressing the Commissioner of Patents,

Washin gton', DJG. g r I 

